Answer:

horns

Answer	Crossword Clue
HORNS	Highway noisemakers
HORNS	Jam chorus?
HORNS	Motown group section

HORNS	Cornet, tuba, et al.
HORNS	Traffic jam "symphony"
HORNS	They may be locked in battle
HORNS	Dilemma features, figuratively
HORNS	French and English
HORNS	Some are English and some are French
HORNS	A triceratops has three
HORNS	Dilemma feature, idiomatically speaking

HORNS	Loudspeakers
HORNS	Orchestra section
HORNS	Jam cacophony
HORNS	They may be French
HORNS	Intrudes, with "in"
HORNS	Warning devices
HORNS	Crescent-moon tips
HORNS	Antlers

HORNS	Traffic noise
HORNS	Dilemma parts
HORNS	Dilemma components
HORNS	Big Band contingent
HORNS	Brass instruments
HORNS	Dilemma choices
HORNS	Trumpets
HORNS	Trumpets and bugles

HORNS	Brass section
HORNS	Threesome on a triceratops
HORNS	Ram parts
HORNS	They can be locked
HORNS	Cornua.
HORNS	Ends of crescent.
HORNS	Band instruments.
HORNS	Orchestral section.

HORNS	Wind instruments.
HORNS	Worn by a dilemma.
HORNS	Decorations of a dilemma.
HORNS	Part of the Philharmonic.
HORNS	Ingredients of a dilemma.